Stove-pipe drum



J. CRIMMNIUS.

Stovepipe Drum.

No. 53,954. Patented April 17, 1866-.

UNITE STATES JOHN ORIMMNINS, OF DETROIT, MICHIGAN.

STOVE-PIPE DRUM.

To all whom it may concern:

Be it known that I, JoHN ORIMMNINS, of Detroit7 in the county of Wayne and State of Michigan, have invented a new and useful machine for saving or economizing heat and fuel in coal or wood stoves and preventing the soot and ashes from accumulating in the pipes or drums thereof, styled the Orinnnnins Heat and Fuel Saving Drum and I do hereby declare that the following is a full, clear, and exact description ot' the construction and operation of the same, reference being had to the annexed drawing, making a part of this specification, and the letters ot' reference marked thereon, said drawing being a perspective view, whereby others skilled in the art can make and use the same.

My invention consists in providing a cylindrical stove-drum, erected perpendicularl y over a stove and in proportion to the size thereot', with certain interior cones or funnels of sheetiron or other malleable metal placed above each other and arranged in the manner following, viz: Vithin the drum, andjust above the entrance of the smoke-pipe into the saine, is set a perpendicular cone of funnel shape, which extends upwardin the drum about onethird of its (the drums) length, the lower line ot' this cone being about three inches from the base of the drum. This cone is held in its place by three or more flanges or strips of sheet-iron or other malleable metal, attached or riveted to it and the body ofthe drum, and when fixed the circumference of its base is distant one and a halt' inch and upward from the interior sides ofthe drum, leaving this space to allow the passage ot' the smoke through the drum. Immediately above this (tirst) cone, and in the interior of the drum, is a second and the middle or central cone, attached or held in its place in like manner as the trst cone, and havingits apex extending upward and into the third cone about one-half of said third cones length or height. This cone is of the saine general shape as the first, but broader at its base, so as to leave on a wood-stove aspace of about one-quarter of an inch and on a coalstove a space of about one-half an inch between the circumference of its (the cones) base and the interior of the drum. Said space being designed to allow the ashes and soot to pass down. In both sides of this second cone, and as near as practicable to its apex, two square openings are cut, proportioned in size to the size of the smoke-pipe to which the drum is attached-5. e., in a stove-pipe of six inches in diameter these openin gs are each about three inches square. Through these openings the smoke passes. Without these square openings in the second cone the heat, after descending and passing around the-base ofthe first cone, would find itself in the direct line ofthe draft, and would pass with it along the side ofthe drum straight up to the stovepipe without entering the second or third cone and experiencing the detention designed thereby; but by broadening the base of the second cone, so as to narrow the space for the upward passage or draft, and cutting these openings or slits in the middle cone, the ascending heat is in large measure first drawn in and detained in the middle cone, and then thrown into the apex ofthe third cone, where it is held until it again passes around the base of the third cone and out of the drum into the stove-pipe. The third cone and highest is placed immediately over the central or middle cone, with its apex about on a line or even with the upper end of the drum, and its base lowered until about opposite and around the middle ot' the second cone. This upper or third cone is in shape similar to the iirst or lower one, and is fastened or held in its place in the same manner as said first cone.

The operation and construction are obvious from the foregoing.

NVhat I claim as my invention, and desire to secure by Letters Patent, is-

The construction, combination7 and arrangement, within cylindrical stove-drums, of three or more cones, substantially as and for the purposes herein set forth and described.

JoHN cRrMMNINs.

In presence of- D. BETHUNE DUFFIELD, HENRY M. DUFFIELD, W. G. THOMPSON. 

